问题
My code:
<?php
function ci($principle, $rate, $time) {
$ci = ($principle * (( (1 + $rate / 100) ** $time) - 1));
echo $ci;
}
?>
<?php
echo ci(10,10,10);
?>
And when I am running it, it gives the following error
Parse error: syntax error, unexpected '*' in D:\Xampp\htdocs\php\functions.php on line 4
Please tell me what's the error in line 4 ($ci = ($principle * (((1+$rate/100)**$time)-1));) ?
回答1:
Your syntax as it is, is correct. The problem is your PHP version. The ** operator was introduced in PHP 5.6 and you probably have something below.
So either update your PHP or use pow().
回答2:
OP had an extra * over
(1 + $rate / 100) ** $time)
which results into PHP syntax error Unexpected *
within PHP verison < 5.6.0 and works fine for the higher versions
function ci($principle, $rate, $time) {
$ci = ($principle * (((1 + $rate / 100) * $time) - 1));
//^^ removed extra *
echo $ci;
}
ci(10, 10, 10);
Demo
来源：https://stackoverflow.com/questions/32905365/parse-error-syntax-error-unexpected